Wernham, C.V., Armitage, M., Hughes, B., Hughes, R., Holloway, S.J., Kershaw, M., Madden, J.R., Marchant, J.H., Peach, W.J. & Rehfisch, M.M. (Eds Rehfisch, M.M., Wernham, C.V. & Marchant, J.H.). 1999. Population, distribution, movements and survival of fish-eating birds in Great Britain.